GENERAL INFORMATION CU800 Service Manual
10
1.6.5 Snap Rings and E-clips
Snap rings (Figure 1) are circular-shaped
metal retaining clips. They secure parts in place on
parts such as shafts. External type snap rings are
used to retain items on shafts. Internal type snap
rings secure parts within housing bores. In some
applications. in addition to securing the
component(s). snap rings of varying thicknesses
also determine endplay. These are usually called
selective snap rings.
The two basic types of snap rings are
machined and stamped snap rings. Machined snap
rings (Figure 2) can be installed in either direction.
Because both faces have sharp edges. Stamped
snap rings (Figure 3) are manufactured with a
sharp and a round edge. When installing a stamped
snap ring in a thrust application, install the sharp
edge facing away from the part producing the thrust.
E-clips are used when it is not practical to use
a snap ring. Remove E-clips with a flat blade
screwdriver by prying between the shaft and E-clip.
To install an E-clip. Center it over the shaft groove
and push or tap it into place.
Observe the following when installing snap rings:
1. Remove and install snap rings with snap rings
pliers. Refer to Basic Tools in this chapter
2. In some applications, it may be necessary to
replace snap rings after removing them
3. Compress or expand snap rings only enough
to install them. If overly expanded. Lose their
retaining ability.
4. After installing a snap ring. Make sure it seats
completely.
5. Wear eye protection when removing and
installing snap rings.
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